Improvement in hydraulic engines



2 Sh-eetsSheet l.

W. SMITH.

HYDRAULIC-ENGINES. N 177,961 Patented. May 30,1876.

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UNI TEI) ESTATES WILLIAM SMITH, OF'

PATENT QFFICE.

CHICAGO, ILLINOIS.

IMPROVEMENT IN HYDRAULIC ENGINES.

To all whom it may concern 7 Be it known that I, WILLIAM SMITH, of the city of Chicago, Cook county, State of Illinois, have invented new and useful Improvements in Hydraulic Engines, of which the following is a full description, reference being had to the accompanying drawings, in which Figure l is an end elevation; Fig. 2, a detail; Fig. 3, a front elevation of the upper part of the machine and avertical section of the lower part; Fig. 4, a detail, being a horizontal section of the parts shown, and is taken at w a, Fig. 3.

' The invention consists in the combination of the parts hereinafter more fully described,

and pointed out in the claims.

Iuse four cylinders, two of which are for the engine proper and two are valve-cylinders. The water surrounds the valve-cylinders, pressing equally on all sides, so that they can move up and down very freely without any friction.

In the drawings, A A represent two cylinders, in each of which is an ordinary pistonhead, a ct. B B are two valve-cylinders, and b b are the valves. The upper and lower ends of these valves fit the inside of their respective cylinders, while the remaining portion of each valve is itself a cylinder, somewhat smaller thanthe cylinders B B, leaving spaces 0 a between the main portion of each valve and the wall of the valve-cylinder, and entirely surrounding the valve. The valves are open both at the top and bottom, to admit of the free'passage of water through them. d d

are cross-bars, one at the top of each valve, to which the valve-rods i t" are connected. The ends of each'valve b b, which fit their cylinders, as stated,are provided with grooves for a water-packing. C is a chamber surrounding the valve-cylinders B B, into which water is admitted through the pipe f. D is the outlet for the water. eeare openings or passages,forming communication between the upper end of each piston-cylinder and its adjoining valve-cylinders. e c are corresponding passages at the bottom of the cylinders. h h are the piston-rods, connected by a pecu- The upper end of each f these piston-rods h h is jointed at 70, (see Fig. 2,) to a forked bar, 1), which bar is pivoted at its outer end 1 to an arm, m,

application filed which is pivoted to the standard. This bar 19 is also pivoted at 1' to anotherforkeol bar, at, which, at its outer end t, is pivoted to a post. 9 g are crank-arms connected to i i. g g are connected to eccentric wheels, in the usual manner, upon the shaft E. '27 c are connected to crank-pins on wheels upon the same shaft E, which shaft is supported in hearings in the outer ends of the standards F F. sis a chamber beneath the valve-cylinders, into which the water passes on its way to the outlet-pipe D. The parts are so constructed and arranged that when the piston-head a is at'the bottom of its cylinder A, a will be near the top of its I cylinder A; and at the same timethe valve b will be at or near the top of its cylinder B, and b at or near the bottom of its cylinder B. These parts are nearlyin the position described in Fig. 3.

In use, water is admitted through the pipe f into the chamber 0, from which it flows into the spaces 0 c surrounding the valves, and when the parts are in the position shown in Fig. 3 water will flow from the space 0, through the passage 0, into the cylinder A, above the piston a, forcing it down. At the same time the water below the piston-head a will flow out through the passage 6' into the lower part of the cylinder B, thence into the chamber 8, thence out through D. At the same time, on the other side, water will flow from c,through 0, into the cylinder A below the piston-head a, forcing it up, and the water above this piston-head a will flow out through the passage 6' into the cylinder B, and down through the cylindrical valve 1) into the chamber 8, and. thence out through D. The valves 11 b rise and fall, alternately opening and closing the passages at the top and bottom of the cylinder A A. The'crankarms o v are to be so connected at their upper ends to their crank-pins that, when the. piston a is at its lowest point, the piston to will not have performed its full upward stroke, so that the passages from the valve-cylinders will be so opened and closed as to keep up a continuous motion.

By means of the chamber C and the large space about the valves I present a sufficient amount of water directly incontact with the valves, and do not have to take it immediately from the supply-pipe.

The parts connected withthe joint which connects the piston-rod with its crank-arm will keep the piston-rod at all times in a perpendicular position. This device makes a very accurate watermeter, an index being suitably attached. It may be placed upon either end of the shaft E. Where a limitedpower only isrequired, one-- half the machine may be usedthat is to say, a single en gine-cylinder and a single valve and I its cylinder may be com bined' and will operatep In such case the chamber 0 will be made to surround the single valve-cylinder, and the" passages between the piston and '-val-ve'-cylinders will be retained, as well as an outlet, What I claim as new is as follows: 1. The combination of vibratingarmnapiv piston cylinders, constructed and arranged substantially as andfor'th'e'purpose set forth.

3. The chambers G and pipef, in combination with cylinders B5B, construc'ted to form spaces a 0, and the valves 11 b.substantially as and for the purpose specified.

WHJLIAMSM-ITH. I -Witnesses:

E. A. WEST, O. W. BOND. 

